Color: Black, Black-Red Frame Material: PC Style: Fashion, Classic Lens Technology: Blue Light Blocking, Progressive Multifocus Lens Material: Resin Magnification Power: Power 1.0x ~ 4.0x Type: Progressive Reading Glasses What are progressive multifocal reading glasses? Asymptotic multifocal glasses have the upper optical area of the lens designed for distance viewing and the lower optical area for near viewing. The degree of the center changes gradually, allowing for viewing in the intermediate range. Most users will need about a week to adjust to progressive multifocal glasses, but adjustment time may vary; they may move more slowly if feeling dizzy. When descending, it is advisable to lower the glasses to use the upper area for a sense of safety and comfort. Product Size: Overall Width: 137mm (5.39in) Bezel Width: 52mm (2.05in) Bezel Height: 42mm (1.65in) Nose Bridge Width: 16mm (0.63in) Temple Length: 135mm (5.31in) Weight: 21.6g (0.76oz) Package Includes: 1 x Reading Glasses Note: 1. There is a 2-3% difference according to manual measurement. Please check the size carefully before purchasing the item. 2. Please note that a slight color difference should be acceptable due to lighting and screen settings.